Comments (3)
Thanks for suggestion!
As always, the are many ways to do something. The current implementation aims not to be the most "perfect" one. But it's good enough to start with, I think.
And yes, I'm not that happy about the input buffering. Not much because of the footprint or linear access to it, but because of the circular shift, required for the each input sample. I still decided to use std::rotate for more transparency instead of branching or cursor adjustments in the loop.
I'm not sure about the efficiency/stability of an IIR filter bank. Since the output latency is more important to me, it's not a compromise. But anyway I'll think about it again when I get a chance...
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Closing, as std::rotate issue is fixed in #4.
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Further reading:
- The Sliding Windowed Infinite Fourier Transform
- Digital signal processing using sliding windowed infinite fourier transform
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Related Issues (9)
- Use modulated sliding DFT backend
- Harmonic Constant-Q Transform (HCQT)
- Provide frequency correction factor within chromagram
- Optimize circular buffer shift in the C++ implementation HOT 1
- Constant-Q Harmonic Coefficients
- Variable-Q transform and arbitrary frequency scale HOT 7
- Add Rust implementation
- Improvements
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